usage: wast2json [options] filename
read a file in the wasm spec test format, check it for errors, and
convert it to a JSON file and associated wasm binary files.
examples:
# parse spec-test.wast, and write files to spec-test.json. Modules are
# written to spec-test.0.wasm, spec-test.1.wasm, etc.
$ wast2json spec-test.wast -o spec-test.json
options:
--help Print this help message
--version Print version information
-v, --verbose Use multiple times for more info
--disable-exceptions Disable Experimental exception handling
--disable-mutable-globals Disable Import/export mutable globals
--disable-saturating-float-to-int Disable Saturating float-to-int operators
--disable-sign-extension Disable Sign-extension operators
--disable-simd Disable SIMD support
--enable-threads Enable Threading support
--enable-function-references Enable Typed function references
--disable-multi-value Disable Multi-value
--disable-tail-call Disable Tail-call support
--disable-bulk-memory Disable Bulk-memory operations
--disable-reference-types Disable Reference types (externref)
--disable-annotations Disable Custom annotation syntax
--enable-code-metadata Enable Code metadata
--enable-gc Enable Garbage collection
--disable-memory64 Disable 64-bit memory
--disable-multi-memory Disable Multi-memory
--disable-extended-const Disable Extended constant expressions
--disable-relaxed-simd Disable Relaxed SIMD
--enable-custom-page-sizes Enable Custom page sizes
--enable-compact-imports Enable Compact import section
--enable-wide-arithmetic Enable Wide arithmetic
--enable-all Enable all features
-o, --output=FILE output JSON file
-r, --relocatable Create a relocatable wasm binary (suitable for linking with e.g. lld)
--no-canonicalize-leb128s Write all LEB128 sizes as 5-bytes instead of their minimal size
--debug-names Write debug names to the generated binary file
--no-check Don't check for invalid modules
Options (30)
| Option | Description | Source |
|---|
--help | Print this help message | help + man |
--version | Print version information | help + man |
-v, --verbose | Use multiple times for more info | help + man |
--disable-exceptions | Disable Experimental exception handling | help + man |
--disable-mutable-globals | Disable Import/export mutable globals | help + man |
--disable-saturating-float-to-int | Disable Saturating float-to-int operators | help + man |
--disable-sign-extension | Disable Sign-extension operators | help + man |
--disable-simd | Disable SIMD support | help + man |
--enable-threads | Enable Threading support | help + man |
--enable-function-references | Enable Typed function references | help + man |
--disable-multi-value | Disable Multi-value | help + man |
--disable-tail-call | Disable Tail-call support | help + man |
--disable-bulk-memory | Disable Bulk-memory operations | help + man |
--disable-reference-types | Disable Reference types (externref) | help + man |
--disable-annotations | Disable Custom annotation syntax | help + man |
--enable-code-metadata | Enable Code metadata | help + man |
--enable-gc | Enable Garbage collection | help + man |
--disable-memory64 | Disable 64-bit memory | help + man |
--disable-multi-memory | Disable Multi-memory | help + man |
--disable-extended-const | Disable Extended constant expressions | help + man |
--disable-relaxed-simd | Disable Relaxed SIMD | help + man |
--enable-custom-page-sizes | Enable Custom page sizes | help + man |
--enable-compact-imports | Enable Compact import section | help + man |
--enable-wide-arithmetic | Enable Wide arithmetic | help + man |
--enable-all | Enable all features | help + man |
-o, --output FILE | output JSON file | help + man |
-r, --relocatable | Create a relocatable wasm binary (suitable for linking with e.g. lld) | help + man |
--no-canonicalize-leb128s | Write all LEB128 sizes as 5-bytes instead of their minimal size | help + man |
--debug-names | Write debug names to the generated binary file | help + man |
--no-check | Don't check for invalid modules | help |
Examples (1) from the manual page, untested
wast2json spec-test.wast -o spec-test.json
parse spec-test.wast, and write files to spec-test.json.
Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.